EP1999851A4 - Foldback free capacitance-to-digital modulator - Google Patents

Foldback free capacitance-to-digital modulator

Info

Publication number
EP1999851A4
EP1999851A4 EP07762710A EP07762710A EP1999851A4 EP 1999851 A4 EP1999851 A4 EP 1999851A4 EP 07762710 A EP07762710 A EP 07762710A EP 07762710 A EP07762710 A EP 07762710A EP 1999851 A4 EP1999851 A4 EP 1999851A4
Authority
EP
European Patent Office
Prior art keywords
foldback
digital modulator
free capacitance
capacitance
free
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07762710A
Other languages
German (de)
French (fr)
Other versions
EP1999851B1 (en
EP1999851A2 (en
Inventor
Rongtai Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisher Rosemount Systems Inc
Original Assignee
Fisher Rosemount Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fisher Rosemount Systems Inc filed Critical Fisher Rosemount Systems Inc
Publication of EP1999851A2 publication Critical patent/EP1999851A2/en
Publication of EP1999851A4 publication Critical patent/EP1999851A4/en
Application granted granted Critical
Publication of EP1999851B1 publication Critical patent/EP1999851B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Measuring Fluid Pressure (AREA)
  • Amplifiers (AREA)
EP07762710.7A 2006-01-26 2007-01-26 Foldback free capacitance-to-digital modulator Not-in-force EP1999851B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/340,808 US7319421B2 (en) 2006-01-26 2006-01-26 Foldback free capacitance-to-digital modulator
PCT/US2007/002154 WO2007089574A2 (en) 2006-01-26 2007-01-26 Foldback free capacitance-to-digital modulator

Publications (3)

Publication Number Publication Date
EP1999851A2 EP1999851A2 (en) 2008-12-10
EP1999851A4 true EP1999851A4 (en) 2012-06-13
EP1999851B1 EP1999851B1 (en) 2014-06-25

Family

ID=38285003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07762710.7A Not-in-force EP1999851B1 (en) 2006-01-26 2007-01-26 Foldback free capacitance-to-digital modulator

Country Status (5)

Country Link
US (1) US7319421B2 (en)
EP (1) EP1999851B1 (en)
JP (1) JP4932853B2 (en)
CN (1) CN101411070B (en)
WO (1) WO2007089574A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102318193B (en) * 2009-01-12 2014-08-06 核心微电子德累斯顿股份公司 Wide range charge balancing capacitive-to-digital converter
EP2434648A1 (en) * 2010-09-25 2012-03-28 ATLAS Elektronik GmbH Encoder and decoder, encoding method and decoding method and system comprising encoder and decoder
TWI449318B (en) * 2010-11-30 2014-08-11 Univ Nat Chiao Tung Digital linear voltage modulator
US8866498B2 (en) * 2011-08-29 2014-10-21 Robert Bosch Gmbh Surface charge reduction technique for capacitive sensors
CN104568169B (en) * 2015-01-28 2017-12-26 江苏物联网研究发展中心 The infrared focal plane read-out circuit of function is eliminated with imbalance
CN108352839B (en) * 2015-11-11 2023-02-21 三菱电机株式会社 A/D converter
US11525749B2 (en) * 2018-05-22 2022-12-13 Apple Inc. Telescopic analog front-end for pressure sensors
US11054328B2 (en) * 2019-03-06 2021-07-06 Psemi Corporation Parasitic insensitive sampling in sensors
EP3734231B1 (en) 2019-04-30 2022-07-13 Nokia Technologies Oy Capacitance-to-digital converter and associated method having an extended measurement range

Family Cites Families (27)

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Publication number Priority date Publication date Assignee Title
US4651146A (en) * 1983-10-17 1987-03-17 International Business Machines Corporation Display of multiple data windows in a multi-tasking system
US5083091A (en) * 1986-04-23 1992-01-21 Rosemount, Inc. Charged balanced feedback measurement circuit
DE58906716D1 (en) * 1989-05-08 1994-02-24 Siemens Ag Integrable sigma-delta modulator using switched capacitor technology.
EP0590658A1 (en) * 1992-10-02 1994-04-06 CSEM, Centre Suisse d'Electronique et de Microtechnique S.A. Force measuring apparatus
US5637802A (en) 1995-02-28 1997-06-10 Rosemount Inc. Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates
DE19625666C1 (en) * 1996-06-26 1998-01-15 Siemens Ag Readout shaft and capacitive measuring sensor
US5963203A (en) * 1997-07-03 1999-10-05 Obvious Technology, Inc. Interactive video icon with designated viewing position
US6140952A (en) * 1997-12-26 2000-10-31 Rosemount Inc. Delta sigma circuit with pulse width modulated offset
US6295875B1 (en) * 1999-05-14 2001-10-02 Rosemount Inc. Process pressure measurement devices with improved error compensation
US6714672B1 (en) * 1999-10-27 2004-03-30 Canon Kabushiki Kaisha Automated stereo fundus evaluation
US6356085B1 (en) * 2000-05-09 2002-03-12 Pacesetter, Inc. Method and apparatus for converting capacitance to voltage
US6452521B1 (en) * 2001-03-14 2002-09-17 Rosemount Inc. Mapping a delta-sigma converter range to a sensor range
US6516672B2 (en) * 2001-05-21 2003-02-11 Rosemount Inc. Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter
US6509746B1 (en) * 2001-06-04 2003-01-21 Rosemount Inc. Excitation circuit for compensated capacitor industrial process control transmitters
JP4336066B2 (en) * 2001-07-11 2009-09-30 株式会社豊田中央研究所 Capacitive sensor device
US6684711B2 (en) * 2001-08-23 2004-02-03 Rosemount Inc. Three-phase excitation circuit for compensated capacitor industrial process control transmitters
US6720777B2 (en) * 2002-02-15 2004-04-13 Rosemount Inc. Bridged capacitor sensor measurement circuit
US6768319B2 (en) * 2002-07-10 2004-07-27 Rosemount Inc. Adaptive compensation of measurement error for industrial process control transmitters
JP2006512029A (en) * 2002-12-20 2006-04-06 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Segment-based motion estimation
US6834258B2 (en) * 2002-12-31 2004-12-21 Rosemount, Inc. Field transmitter with diagnostic self-test mode
US6873277B1 (en) * 2003-09-19 2005-03-29 Rosemount, Inc. Multi-phase measurement system with synchronized sigma delta converters
US7017387B2 (en) * 2003-10-20 2006-03-28 Intertech Development Company Calibration and validation for leak detector
GB0402035D0 (en) * 2004-01-30 2004-03-03 Hewlett Packard Development Co Physical object with memory tags and apparatus for writing and using such objects
US6975103B1 (en) * 2004-06-25 2005-12-13 National Semiconductor Corporation Resistance ratio digitizing ohmmeter system
WO2006015492A2 (en) * 2004-08-13 2006-02-16 Dofasco Inc. Remote crane bar code system
EP1861723B1 (en) * 2005-03-09 2017-04-19 Analog Devices, Inc. One terminal capacitor interface circuit
US20090160618A1 (en) * 2005-11-17 2009-06-25 Kumagai Monto H Method to personalize consumer items for use in outdoor activities

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *

Also Published As

Publication number Publication date
CN101411070B (en) 2012-06-06
CN101411070A (en) 2009-04-15
EP1999851B1 (en) 2014-06-25
EP1999851A2 (en) 2008-12-10
JP4932853B2 (en) 2012-05-16
US20070171108A1 (en) 2007-07-26
WO2007089574A3 (en) 2008-04-24
WO2007089574A2 (en) 2007-08-09
JP2009524994A (en) 2009-07-02
US7319421B2 (en) 2008-01-15

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